High resolution near-bottom bathymetric survey of the volcanic terrain off Kume Shima with AUV Gondou.
In May and June 2016, the Hydrographic and Oceanographic Department of the Japan Coast Guard conducted bathymetric surveys of an unexplored volcanic knoll off Kume Shima with the Autonomous Underwater Vehicle (AUV) Gondou. AUV-collected high resolution bathymetry detected volcanic features such as lava domes or ropy lava flows. These volcanic features were further identified as the highbackscatter intensity area from the shipboard multibeam sonar. The temperature sensor deployed on the AUV recorded an approximately 0.1 ℃ steep rise at ～ 100 m above the southeastern slope of the knoll. At almost the same time, the side-scan sonar on the AUV detected acoustic water column anomalies rising from the seafloor. These results strongly imply the presence of high-temperature hydrothermal venting.
| Main Authors: | , , , , , |
|---|---|
| Format: | Journal Contribution biblioteca |
| Language: | Japanese |
| Published: |
2018
|
| Online Access: | http://hdl.handle.net/1834/15489 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | In May and June 2016, the Hydrographic and Oceanographic Department of the Japan Coast Guard
conducted bathymetric surveys of an unexplored volcanic knoll off Kume Shima with the Autonomous
Underwater Vehicle (AUV) Gondou. AUV-collected high resolution bathymetry detected volcanic features
such as lava domes or ropy lava flows. These volcanic features were further identified as the highbackscatter
intensity area from the shipboard multibeam sonar. The temperature sensor deployed on the
AUV recorded an approximately 0.1 ℃ steep rise at ～ 100 m above the southeastern slope of the knoll. At almost the same time, the side-scan sonar on the AUV detected acoustic water column anomalies rising from the seafloor. These results strongly imply the presence of high-temperature hydrothermal venting. |
|---|